I had a Summit Viper XLS Climber for 2 years, I have to tell you that out of all the stands I have ever sat in or packed around or even Climbed with. It was the Best in my Book, Never once felt unsafe in a tree, & I could always move around in the tree & on the tree with ease. It does take some Practice, But it was everything I ever wanted in a Stand. I sat in it for 8 hours at a time- ALL day hunts, and It packed up fast, got it on the tree fast and the Seat was awsome on it. It felt like a Recliner in the sky, It was that comfertable. I have used many stands in my life and that was the best one I ever used & owned. Im a Big guy too 6'3-230lbs & I never once had any problem using it anywhere.
I had to sell it due to Chronic Back Problem's, I sold it to a Member on here. gd357 came down & bought it a few years ago. He can tell you about that Stand too. I hated to get rid of it, But I could no longer use it at all.
Let us know what you get & how you like it. Good Luck Hunting too.